/* 首页样式 */
/* 版心 */
.wrapper{
    margin: 0 auto;
    width: 1200px;
}

body{
    background-color: #f3f5f7;
    color: #333;

}

.header{
    height: 100px;
    background-color:white;

}

.header .wrapper{
    padding-top: 29px;
    display: flex;
}
.header .wrapper .head{
}

/* logo */
.logo a{
    display: block;
    width: 200px;
    height: 45px;
    background-position:right;
    background-repeat: no-repeat;
    background-image: url(../images/logo.png);
    background-size: contain;
    font-size: 0px;
}

/* 导航 */
.nav{
    margin-left: 102px;
}

.nav ul{
    display: flex;
}

.nav li{
    margin-right:24px;
}

.nav a{
    display: block;
    padding: 6px 8px;
    line-height: 27px;
    
    font-size:19px
}

/* active类选择器,表示默认选中的a */
.nav li .active,
.nav li a:hover{
    border-bottom: 2px solid #00a4ff;
}


/* 搜索 */
.search{
    display: flex;
    width: 412px;
    height: 40px;
    background-color: #f3f5f7;
    border-radius: 20px;
    margin-left: 64px;
    padding-left: 19px;
    padding-right: 12px;
}

.search input{
    flex: 1;
    border: 0;
    /* 去掉表单控件的焦点框 */
    outline: none;
    background-color: transparent;
}

/* ::placeholder 选中就是 placeholder */
.search input::placeholder{
    font-size: 14px;
    color:#999;
}

.search a{
    width: 16px;
    height: 16px;
    background-image: url(../images/search.png);
    background-repeat: no-repeat;
    background-size: contain;
    align-self: center;
}

.user{
    margin-left:32px ;
    margin-top: 4px;
}

.user img{
    /* 行内块与行内垂直对齐方式 */
    vertical-align: middle;

    width: 36px;
    height: 36px;
    border-radius: 18px;
    
    margin-right: 7px;
}

.user span{
    font-size: 16px;
    color: #666;
}

/* banner区域 */
.banner{
    height: 420px;
    background-color: #00acff;
}

.banner .wrapper{
    height: 420px;
    background-image: url(../uploads/bannner.png);
    background-size: contain;
    background-repeat: no-repeat;
    background-position:center;

    display: flex;
    justify-content: space-between;
}

/* 侧导航 */
.banner .left{
    width: 191px;
    height: 420px;
    background-color: rgba(0, 0, 0, 0.42);
    padding:3px 20px;
}

.banner .left a{
    display: block;
    height: 46px;
    line-height: 46px;
    font-size: 16px;
    color: white;

    background: url(../images/箭头.png) no-repeat right center;
    background-size: 15px;
}

.banner .left a:hover{
    color: #00a4ff;
}

/* 课程表 */
.banner .right{
    margin-top: 60px;
    width: 218px;
    height: 305px;
    background-color: #209dd5;
    border-radius: 10px;
}

.banner .right h3{
    margin-left: 14px;
    height: 48px;
    line-height: 48px;
    font-size: 15px;
    color: white;
    font-weight: 400;
}

.banner .right .content{
    background-color: white;
    height: 257px;
    border-radius: 10px;
    padding: 14px;
}